Railway Interlocking Systems

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Technical Specifications

SIL4 Safety Integrity Level (EN50129, EN 50126, EN50128)

Modular and Scalable System Architecture

Interfaces Compatible with Different Types of Field Equipment

Modular design, fast implementation with COTS components, allowing for subsequent modifications and easy maintenance

Compatibility with ETCS L1

TÜBİTAK Interlocking Systems, with its high safety integrity level and comprehensive functionality, is the domestic system that Türkiye's railways have lacked for many years.

Modular and Scalable SystemCompatible with Different Equipment

YERLİSİNYAL-ANK (Domestic Signal-Interlocking) is the first and only domestic interlocking system in Türkiye with SIL4 level safety integrity.

YERLİSİNYAL-ANKYERLİSİNYAL-ANK has been deployed on a total of 850 km of railway lines across Türkiye, from Malatya to Aydın and from Kars to Ankara.

YERLİSİNYAL-ANK is used for equipping both signal-free railway lines and renewing outdated interlocking systems that have reached the end of their service life.

YERLİSİNYAL-ANK has flexible interfaces that can drive field equipment from different manufacturers (signal, track circuit, axle counter, switch motor, level crossing protection system, ATS).